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T H E W O R L D L E A D E R I N C L E A N A I R S O L U T I O N S
SAAF
Recirculation Unit and Pressurization and Recirculation Unit
INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS
Table of Contents
1.0 Introduction
1.1 About this Document
3.8 Afterfilter Installation
3.9 High-Efficiency Filter Installation
3.10 Latch RU Doors
Air Purification Systems
™
1.0 Introduction
1.1 About this Document
This document contains the
information necessary to properly
receive, assemble, install, operate,
and maintain the AAF Flanders
Recirculation Unit (RU) and
Pressurization and Recirculation
Unit (PRU) filter systems and filters.
The purchaser, installer, and operator
of the filter system MUST read and
comply with this document in its
entirety prior to installation of the
equipment and its operation. Failure to
comply with the requirements of this
manual may void the product warranty.
CAUTION: These instructions
are specific to the AAF Flanders
Recirculation Unit and Pressurization
and Recirculation Unit filter
systems and filters. All ancillary
tasks including, but not limited to,
electrical and mechanical work,
equipment handling, and safety
procedures must be performed in
accordance with industry-accepted
practice and all relevant local, state,
and federal government codes,
laws, and policies.
NOTE: The AAF Flanders
Recirculation Unit and
Pressurization and Recirculation
Unit filter systems and filters are
similar in most respects. For ease of
reading, this manual will refer only
to the Recirculation Unit. Unless
specifically stated otherwise, all
references to the Recirculation
Unit will apply equally to the
Pressurization and Recirculation
Unit. A detailed description of both
systems can be found in section
2.0, Principles of Operation.
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Table of Contents
Related Manuals for AAF Flanders SAAF RU500V
Summary of Contents for AAF Flanders SAAF RU500V
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Page 1: Table Of Contents
1.1 About this Document 5.1 Prefilter information necessary to properly receive, assemble, install, operate, 1.2 Packaging and Shipping, 5.2 Afterfilter and maintain the AAF Flanders Receiving and Inspection, 5.3 High-Efficiency Final Filters Handling and Storage Recirculation Unit (RU) and 5.4 Gas-Phase Filter Monitoring Pressurization and Recirculation 1.3 Product Descriptions... -
Page 2: Packaging And Shipping, Receiving And Inspection, Handling And Storage
(when shipped horizontally) will not support the 1.2.1 Packaging and Shipping: Unless otherwise defined weight of the unit. Any attempt to support the housing from in the purchase order and agreed by AAF Flanders, the RU these surfaces may result in serious equipment damage and filter housing and filters are packaged for domestic transit severe personal injury. - Page 3 Note: Optional or special filter arrangements may be supplied, depending on the requirements of the project. Check the purchase order and AAF Flanders submittal drawing(s) for details. 12″ high x 24″ wide x 12″ deep SAAF HD cassette ships in two halves. ™...
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Page 4: Product Model Designations
Copies of the appropriate drawings will have been supplied as and dimensions can be found on the product submittal drawings. part of the AAF Flanders submittals in response to the purchase The gas-phase chemical filters will typically have a maximum order. Obtain and review the drawing(s) before proceeding with weight of approximately 40 pounds (20kg). Particulate filters will... -
Page 5: Related System Equipment
NO WELDING WILL BE REQUIRED. The AAF Flanders RU is one of the various framing and support systems designed to support the SAAF Cassette in the air In general, assembly of the filter system will consist of the stream, allowing easy installation, operation, and maintenance following: of the system. • Preparation of the installation location 2.2 Recirculation System... -
Page 6: Installation Instructions
3.0 Installation Instructions Consult the product drawing(s) submitted on this order before proceeding. Fan section access panel Safety grille 3.1 Space Requirements A minimum of 36” clear space must be available at the access side of the Recirculation Unit to perform routine maintenance. Additional space may be required for inlet and outlet ductwork. -
Page 7: General Filter System Installation Procedure
Anchor bolt, by others Track connection detail at support beam. This detail shows AAF Flanders’ “quick release” track installation method. Accurately located support post holes ensure high tolerance track spacing. Note that the track connection is completely isolated from the filter sealing surface and cannot interfere with filter installation. -
Page 8: Preparation For Filter Installation
Provision of the inlet and outlet ducts, the connecting hardware, and the gaskets or caulk will be the responsibility of the installer or others. These items will not be supplied by AAF Flanders unless noted specifically in the AAF Flanders quotation and in the accepted customer purchase order. Any caulk used should be a long-life, flexible, nondrying caulking material. The caulk... -
Page 9: Gas-Phase Chemical Filter Installation
3.7 Gas-Phase Chemical Filter Installation The following instructions are specific to the installation of the HD gas-phase chemical filter cassettes into an RU housing. Typically, two stages of gas-phase filtration will be supplied in any RU, a lower filter bank and an upper filter bank. The instructions for installing the gas-phase filters will be identical for both banks. 3.7.1 Preparing the Cassette for Installation: Remove the cassette from its carton and plastic bag. You will notice that each half-cassette is accompanied by a plastic bag containing loose gaskets (see right). These are supplied specifically for use when the cassette is to be installed into the RU. These gaskets are critical for the sealing of the gas-phase cartridges to prevent bypass of contaminated air around the filters. - Page 10 3.7.2 Handling of the Cassette: The AAF Flanders SAAF 3.7.3 Installation of the Cassettes in the RU: Install the Cassette is designed to be sturdy and to support a significant cassettes as shown in the sequence below starting with the weight of chemical media.
- Page 11 Step 2: Address the left and right hand side support and sealing tracks at a Step 3: Rotate the cassette slightly upwards so that the vertical locator bars are slight angle as shown. Engage the black hollow core gaskets in the tracks with inserted into the slots in the half-cassette, while maintaining the compression the yellow butterfly gaskets on the half-cassette, see detail below.
- Page 12 3.8 Afterfilter Installation It is recommended that a temporary afterfilter be installed in the system to collect an initial plume of dust that might be blown from the gas-phase chemical filters. The installation of the afterfilters is exactly the same process as described for the prefilters in Section 3.6. See below: Step 4: Repeat the process of gas-phase cassette installation and sealing until the track is filled with sealed cassettes as shown. The outside face of the cassette should be even with the edge of the track.
- Page 13 Repeat the process of afterfilter installation until all tracks are filled with afterfilters. 3.9 High-Efficiency Final Filter Installation A high-efficiency final filter bank ensures that the filtered air meets the highest levels of particulate cleanliness. Install the final filter as shown here. The standard RU is designed to accept a 6″-deep, single header final filter only. For best results, AAF Flanders recommends the use of one of its line of single header M-Pak high-efficiency filters. The tracks are spaced and sized to accept 24″ x 24″ x 6″ and/or 24″ x 12″ x 6″ nominal ASHRAE style filters. Step 2: The installed high-efficiency M-Pak filter. Repeat the process of high-efficiency filter installation until all tracks are filled with high-efficiency filters. 3.10 Latch RU Doors Now close and latch the RU doors as shown.
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Page 14: Pressure Gauge
Recirculation Unit (RU) with wall mounted gauges 3.12 Fans The standard RU is supplied with an internally-mounted fan. See the AAF Flanders submittal drawing and wiring diagram for information and details. CAUTION: All electrical work must be carried out in accordance with all appropriate governing electrical codes and standards. -
Page 15: Start-Up Instructions
Under some circumstances, the installer may need to provide, install, and wire a properly sized motor starter. See the AAF Flanders wiring diagram supplied on the order for details. In all cases, an appropriate disconnect switch with fuses/circuit breakers should be provided. These components are normally supplied and installed by others. -
Page 16: Maintenance
Monitor the pressure drop across the filter system to ensure that the filters are operating within the pressure range expected and to 5.6 Disposal of Used Filters ensure that the pressure drop is not too high. Consult the AAF Used chemical filters and particulate filters should be packaged Flanders drawing for the expected clean filter pressure differentials. and disposed of in full accordance with all required and applicable laws and regulations. Consult with local environmental 5.0 Maintenance... -
Page 17: Troubleshooting
5.10.1 Cleanliness: Sweep and vacuum all standing dust or 6.1.4 Freezing: On air intake systems, the presence of dirt in the system and damp wipe all surfaces. Be mindful of moisture in the filters when caused by or combined with the impact of cleaning solvents on the performance and life condensation, rain, snow, sleet, or ice, and when subjected of the gas-phase chemical filters, and take appropriate to freezing temperatures, can cause the filters to freeze and... -
Page 18: Spare Parts List
Pressure Component Initial ΔP (in. w.g.) Final ΔP (in. w.g.), Recommended 9.1 Fan Selection and Sizing or Actual The following guidelines are provided to inform the user of the criteria used by AAF Flanders to select an integral fan that is External pressure 0.10 0.10 provided with the RU. - Page 19 (4.06 in. w.g). This may result in inadequate air supply. average pressure drop through the system and the size of Alternatively, the filters can be replaced before they reach the cabinet is not an obstacle, AAF Flanders will select a fan their final recommended pressure drop, which results in to meet the specified requirements. This will normally occur higher filter replacement costs. when the external static pressure drop exceeds the standard value of 0.1 in.
- Page 20 Air Purification Systems ™ Recirculation Unit and Pressurization and Recirculation Unit AAF Flanders has a policy of continuous product research and improvement and reserves the right to change design and specifications without notice. ©2017 AAF International and its affiliated companies.